NORD Drivesystems BU0700 User Manual
Page 123
BU 0700 GB-1411
Subject to technical alterations
123
NOTE:
Please note that these limit value classes are only reached if the standard switching frequency (4/6kHz) is being used and the
length of the shielded motor cable does not exceed the limits.
In addition, it is essential to use wiring suitable for EMC. (Control cabinet / Cable clamping)
The motor cable shielding must be applied on both sides (inverter shield angle and the metal motor terminal box). To comply
with Class 3, cable shielding must also be applied at the entry to the control cabinet (EMC screw connection).
Overview of standards that, as per EN 61800-3 (product standard for frequency inverters) are
based on EN 50081; 510082 and must be complied with
Standard
Limit value class
Emission of interference
Cable based interferences
EN55011
"A"
"B" with filter
Radiated interference
EN55011
"A"
"B" with filter, built into control cabinet
Immunity from interference
DSE
EN61000-4-2
8kV (AD & CD)
Burst on control cables
EN61000-4-4
1kV
Burst on mains and motor cables
EN61000-4-4
2kV
Surge (phase-phase / phase-ground)
EN61000-4-5
1kV / 2kV
EMF
EN61000-4-3
10V/m; 26-1000MHz
Voltage fluctuations and drops
EN61000-2-1
+10%, -15%; 90%
Voltage asymmetries and frequency
changes
EN61000-2-4
3%; 2%
Wiring recommendations for compliance with Class 3
M
3 ~
PE
L
1
W
V
U
W
V
U
380-480V
50-60Hz
L
1
L
2
PE
L
2
L
3
L
3
PE
+UZW/-B
BR/+B
NORDAC SK 700E
Aux. mains
filter
Shield angle
Brake resistor
(Accessories)